Steam-heater.



N0. 7|l,769. Patented Oct. 2], I902.

B. K. HUSSEY.

STEAM HEATER.

(Application filed Mar. 16, 1901.)

3 Sheets-Sheet I.

(No Model.)

2 4 J- flI VTNESSES I l INVENTOR.

$ 4 ATTORNEX I a nu: Momma PETERS co. Pucmiumo wnsumm'on o c 'No. 7mm.Ph'tented 1mm, I902.

B. K. HUASSEY.

STEAM HEATER.

,a ucamn filed Mar. 16, 1901, 1 (No Model.) 3 Sheets-Sheet 2.

FIG?- 2.

WITNESSES; INVENTORQ fid ATTORNEY.

m: nonms PETERS co. morainuon wAsmNaToN. b. c.

Patented Oct. 2|, [902.

B. K. HUSSEY. STEAM HEATER.

Application filed Map 16. 1901.1

3 Sheets-Sheet 3.

(No Model.)

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WITNESSES (Qt/MM M z vz/zzvrox. W

4 ATTORNEY.

M MIOMMUY mere". 0. c.

UNITED STATES PATENT OFFICE.

BRYANT K. HUSSEY, OF INDIANAPOLIS, INDIANA.

STEAM-HEATER.

SPECIFICATION forming part Of Letters Patent'No. 711,769, dated October21, 1902.

Application filed March 16 T0 at whmn it may concern:

Be it known that I, BRYANT K. HUSSEY, of Indianapolis, county of Marion,and State of Indiana, have invented a certain new and usefulSteam-Heater; and I do hereby declare that the following is a full,clear, and exact description thereof, reference being had to theaccompanying'drawings,in which like nu merals refer to like parts.

The object of this invention is to provide a new arrangement of heatingpipes or apparatus in and for a dry-kiln, and especially adapted for usein a lumber-drier.

One feature of the invention consists in providing doubly-curved pipesfor connecting the header with the main steam-pipes in the apparatus,whereby the joints will not be affected by the great expansion andcontraction of the pipes which occur in large lumberdriers. The jointsare not affected by'any expansion or contraction of the pipes, becauseall the creeping is taken up by the curved pipes at the end. Thesecurved pipes. are formed in adouble curve, (Sshaped,) making a straightconnection at one end with the main pipe and a straight connection atthe other end with the header, but with a reverse curve between theends, which will take up any longitudinal creeping of the main pipes. Tothis end the header is stationary and also the main pipes'are heldimmovable laterally, so that the only modification which can result fromthe creeping of the pipes is theincrease or decrease in the curvature 0rbends of the end pipes, and this modification takes place some distancefrom the joints, and therefore does not afiect the joints.

An advantage and effect of the above arrangement is that it enables meto place supplementary short pipes in connection with the main pipes atthe end of the lumber-drier where increased heat is desired. To do this,a supplementary pipe may lead from a main pipe at some point between itsends to the curved pipe connecting it with the outletheader. Thissupplementary pipe isshorter than the main pipe, so that the expansionand contraction of it andthe main pipe would vary. Hence thisarrangement is possible only in this system, because of thedoubly-curved pipes at the end, which can without harm 1901. Serial No.51,473. (No model.)

take up the difference in the expansion and contraction of the pair ofpipes.

A feature of the invention kindred to the foregoing is the use, withmain steam-pipes, of other pipes secured therewith, but beingpractically a continuation thereof, whereby any main steam-pipe that maybe cracked or be injured can be removed without affecting the rest ofthe system by merely detaching it from the parts with which it isconnected. This also enables all of the main steam-pipes to be of thesame length. Another result is that it enables the header and connectingend pipes, whether curved or not, to be furnished at the factoryseparate from the main heating-pipes and there be connected with the setof main pipes, such as may be on hand at the factory or as may bedesired in different parts of the factory. In other words, speciallengths of main pipes will not be required with this system.

Another feature of the invention consists in-crossing the. pipes at theend before entering the header, whereby a single header at each end willsuffice for a large number of pipes. The advantage resulting from thisarrangement arises not only from the decreased oost in construction, butalso from the fact that since all the steam for the whole series ofpipes comes from a single header or source instead of a plurality, ashas been the general custom, the same amount of heat will be conveyed tothe various pipes inthe series.

Another feature of the invention consists in connecting the steam-inletheader with the main pipes by smaller pipes,whereby they will bendreadily from expansion and contraction and the steam will be equablydistributed to the larger pipes. When only large pipes are used, thereis often trouble in' the steam from the header going wholly into only aportion of the pipes to the neglect of some of the other pipes. Withthis improvement, however, thepipes leading out of the header beinginitially small, the steam in its effort to get through them will crowdquickly into all of them. I provide both ends of the heating apparatuswith these reduced connecting-pipes, the arrangement made at thesteam-outlet end being not only that they may readily bend to relievethe main pipes,

ICO

ing toward the inlet-header.

but also to baffle the steam that may be in'a single main pipe andprevent its rapid passage therefrom. This does not afiect the movementof the steam from any of the other pipes, its action in each pipe beingindependent. One effect of the use of the smaller end pipes is that thepipes may be in the same plane, the small pipes leading from the upperpart of the main pipes on one side of the lumber-drier crossing over andresting upon the small pipes that lead from the lower side of the mainpipes 011 the other side of the lumber-drier. These small pipes thus canbe crossed and maintained substantially in the same plane without anydropping, as is so common. The whole set of heating-pipes may thus beprovided for a large lu mber-drier and keep within a two-inch plane fromend to end.

These and the other features of my invention will more fully appear fromthe accompanying drawings and the following description and claims.

In the drawings, Figure 1 is a plan of the system of heatingpipescentrally broken away. Fig. 2 is an elevation of the inner face of theoutlet-header,one end being broken away and showing the pipes connectedtherewith in cross-section. Fig. 3 is a central longitudinal section ofthe inlet end, including the inlet-header, small inlet-pipes, and mainpipes, parts being broken away. Fig. 4 is an end elevation of theconnecting-sleeves on the inlet ends of a number of main pipes and themeans for supporting the main pipes, parts being broken away. Fig. 5 isa section on the line A A of Fig. 1 on the inside of the supports forsaid pipes at their inlet end look- Fig. 6 is the same as Fig. 5 for theoutlet end of the heating apparatus, being on the line B B of Fig. 1looking toward the outlet-header. Fig. 7 is a section of two main pipeson the line C O in Fig. 1, showing the end elevation of twosupplementary pipes.

The heating apparatus shown in the drawings consists of an inlet-header1, a number of small doubly-curved connecting-pipes 2, a number of mainheating-pipes 3, and an outlet-header 4, with the attendant partsnecessary to hold them in place. The main pipes 3 rest upon suitablecross-beams 5, as appears in Figs. 5 and 6, and are held from lateralmovement by spreaders 6. At the inlet end there is only one row orseries of pipes 3, as shown in Fig. 5. At the outlet end there are twoseries of pipes, as appears in Fig. 6, the top series being the mainheating-pipes 3, (shown in Fig. 5,) and the lower series being branch orsupplementary short heating-pipes 7. The spreader consists of a metalplate with a series of notches on the bottom edge, leaving extensionsbetween them that when in place extend between the pipes and rest uponthe beam 5. The spreader is secured to the beam 5 by a screw-bolt 8,which appears in Figs. 3 and 5, or may be held in place by any othermeans, so as to hold the pipes from lateral movement. Where a double rowof pipes is to be held in place, the spreader is notched on both theupper and lower edges, as appears in Fig. 6. The spreader permits thepipes to have only longitudinal movement. The curved pipes 2 arestraight at each end for a short distance and then bent in the form of areverse curve, so the curvature is removed some distance from the ends.The curved pipes here shown are smaller than the main pipes, the mainpipes being preferably oneinch pipes and the curved pipes half-inchpipes.

The union between the curved pipes and the straight main pipes isillustrated in Figs. 3 and 4. It consists of the sleeve 10, with a largeend, which screws upon a large pipe, and a small end, which is notconcentric with the sleeve, but is set to one side of the center,

and into this the small pipe is screwed. On the main pipes in the righthalf of the series shown inv Fig. 1 the sleeve 10 is turned into theposition shown in section in Fig. 3 and an end elevation in the lefthalf of Fig. 4 with the small end of the sleeve uppermost. The sleeve isreversed on the left half of the pipes shown in Fig. 1, so that thesmall end of the sleeve 10 is in its lowest position, as appears in theright half of Fig. 4, and in the sleeve shown in Fig. 3 behind thesectioned sleeve. The small pipes'2, extending from the right half oftheseries of main pipes in Fig. 1 and from the sleeve 10, whose small endis uppermost, cross and rest upon the other half of the small pipes, asis clear in Fig. 1, so that the two layers of pipes will not occupyappreciably more space vertically than the one layer of large pipes,whereby the large and small pipes willbe substantially in the sameplane, as appears in Fig. 3. Therefore the whole set of pipes when thebranch heatingpipes 7 are not used can be set in avertical space of lessthan two inches. There is a great saving in space, and a drop in thepipes is not required with the construction herein shown. Also the largepipes may be singly unscrewed and removed and replaced withoutdisturbing other pipes.

The connection between the small pipes and the header is shown in Fig.3. Asleeve 11 screws into the header to a limit, and the end of thesmall pipe screws into said sleeve any distance that may be necessary toput it in exactly the right position. I preferably stagger the positionsof the connections of the pipes with the headers, as appears in theupper and lower half of Fig. 2. At the outi with the main pipes 3 arelikewise immovable in any direction excepting what is due to thelongitudinal creeping of thelarge pipes. The two ends, therefore, of thecurved pipes being immovable excepting from the creeping of the mainpipes, it is clear that such longitudinal movement of the main pipeswill be taken up by the two curves in the small curved pipes. Alengthening of the main pipe will increase the curvature at the twocurves in the small pipe, and the contraction of the main pipe willdecrease the curvature of the small pipe. The only change that,

will occur is in the degree of curvature of the small pipes, and thepipes at the union between the large and small pipes will only movelongitudinally, and thus not affect the joints, and there can be noappreciable movement of the end of the small pipe at its connection withthe header, so that the joints there cannot be afiected.

The branch pipes 7 are much shorter than the main pipes 3, and thereforethere may be difference of contraction and expansion between these twoseries of pipes; yet,since they are connected with the outlet-header bysmall curved pipes, all longitudinal movement of them, however varying,will be taken up by the curved pipes.

The union between the short pipe 7 and the main pipe 3 is illustrated inFig. 7. It is an elbow 12, extending from a T in the main pipe, and thebranch pipe screws into said elbow. The elbow 12 extends from the mainpipe in a laterally-inclined direction, so

that the short pipe 7 will not be under the main pipe, but its positionwill be staggered with reference to the position of the main pipes, asappears in Figs. 1 and 6.

13 is a drain-pipe leading from the outletheader.

14 is the steam-inlet pipe.

What I claim as my invention, and desire to secure by Letters Patent, is

1. In a steam-heater, the combination of a pair of oppositely-placedsteam-headers, a series of straight main heating-pipes located:

between said headers and extending toward them, and connecting-pipesextending obliquely from the ends of the main pipes to the headers andarranged in a laterally-extending row with the connecting-pipes on oneside crossing under those on the other side.

2. In a steam-heater, the combination of a number of main pipes, anumber of smaller pipes, and sleeves connecting the small pipes with thelarge ones having an eccentric small end for holding the small pipes,aportion of said connecting-sleeves being secured on the large pipeswith their small ends uppermost and the remainder with their small endsin their lowest position, substantially as set forth.

In witness whereof I have hereunto affixed my signature in the presenceof the witnesses herein named.

. BRYANT K. HUSSEY. Witnesses:

V. H. LocKWooD, FLORENCE E. BRYANT.

